vigentennial

1 of 2

adjective

vi·​gen·​ten·​ni·​al

¦vījen‧¦tenēəl

: occurring once every 20 years : relating to a 20th anniversary

vigentennial

2 of 2

noun

"

plural -s

: a 20th anniversary or its celebration

Word History

Etymology

Adjective

Latin vigeni, viceni twenty each + English -tennial (as in centennial)

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